Production of shuttles



fune E6, i936. J. RCKERT WWAZ PRODUCTION OF SHUTTLES I Original `Filed Aug. 6, 1932 .'5 Sheets-Sheet l June 1935. J. RUCKERT PRoDUcToN 0F SHUTTLES Original FiledAug. 6, 1932 5 Sheets-Sheet 2 O Vw@ June 16,1936. J RU'CKERT Y 2,044,402

PRODUCTION OF' SHUTTLES original Filed Aug. e, 1952 s sheets-sheet 3 Patented June 16, 1936 PATENT OFFICE PRODUCTION oF sHUrr'rLEs Josef Rckert, Zuckmantel, Czechoslovakia Application August' 6, 1932, Serial No. 627,801.

Renewed January `16, 1936. v In ('Jzechoslovakiav May 5, 1932 4 Claims. (Cl. 144-2) This invention relates to an improved device for producing weavers shuttles and for trimming worn shuttles.

In the manufacture of weavers shuttles particular attention must be paid to the fact that the lateral surfaces of the shuttles must not only be parallel but their angular position in relation to each other must accuratelyv comply with the requirements of the loom in'which they are intended to be used. If these requirements are not strictly adhered to, difficulties will immediately arise with regard to the satisfactory running of the shuttle in the loom, which will be augmented as the number of shuttles used l5 increases. It is likewise of great importance that each shuttle should be picked to the same extent, because the slightest deviation from this rule will result in theshuttle flying out.

It is still necessary to resort to manual methods in the production of shuttles from rough blocks. Although it has already been proposed to provide devices for trimming worn shuttles, in which the said shuttles are clamped between the centres of a support only and are thus moved along in front of a tool,` this method is defective because the clamping requires a strong axial pressure to be exerted upon the shuttle, the walls of which are usually very thin.` This is conducivefto deformations of the walls and renders uniform machining impossible.

The object of the present invention is to providea device wherein the defects above referred to are eliminated and the clampingis effected Y quickly and in a very simplemanner, and wherein it is possible to machine rough blocks, as well as to trim used and worn shuttles, in such a manner that the required inclinationv of the edges of the shuttle and a perfectly uniform machining of each edge are obtained-with great accuracy.

In the new device, in the flrst place, the known support is used, wherein the rough blocks, or the worn shuttles to be trimmed, are clamped for the purpose of feeding them along in front'of a tool, such as a milling cutter. According to the invention, such support carries a clamping device, comprising a base plate rotatable about a horizontal axis, and a clamping bracket with adjustable clamping jaw, between which is disposed an adjusting plate. Said adjusting plate is adjustable according to the width of the shuttle in question. The clamping device, as a whole, is rockable about ahorizontal axis and its inclination to the horizontal is adjustable, for example by means of a micrometer screw. The lateral movement of the auxiliary slide carrying the clamping device may be limited by means of a stop operated by a threaded spindle.

Furthermore, Vthe clamping device is soarranged that the upper vertically displaceable clamping jaw may be rocked about a horizontal axis disposed on the slide and adapted to securely clamp rough blocks, the edges of which are not parallel to each other. This arrangement is also very useful -for .clamping shuttles which are to be trimmed. 1 The auxiliary device, which is utilized in connection with the device described above for trimming worn shuttles, comprises a separate adjusting member, preferablyinthe form of a metal rail which is provided with angular pieces, having adjustable support like slides, in which centres or points are arranged for receiving the pointsl of the shuttles. By means of this device, the axis of the shuttle to be trimmed is so adjusted that itis parallel to the steel rail, whether bothpoints of the shuttle lie in the axis of the shuttle or not. Thereupon the steel rail is placed upon the above described adjusting plate, so that the clamping of the shuttle may be eected in the same way as that of the rough blocks, the opposite edges being supported on the whole surface. The shuttle to be machined is, however, not clamped into .this adjusting member under the applicai tion of axial pressure, but is placed therein in a comparatively loose manner.

In order that the invention may be more clearly understood, one particular constructionthereof will now be described with reference to the accompanying drawings. whereinz- Fig. 1 is a vertical section of the clamping means on line I-I of Fig. 2;

Fig. 2 is a longitudinal section of lthe same on line II-II of Fig. 1;

Fig. 3 is a sectional view taken on line III- III of Fig. 1;

Fig. 4 is a cross sectional view of a weavers shuttle, wherein the angles in question have been shown on a larger scale; n

Fig. 5 is a front elevation of the ciampi for the means shown in Figs. 1 and 2, Y

Fig. 6 shows in detail the stop which limits the feeding of the auxiliary slide carrying the clamping device towards the tool according t line VI-VI in Fig. 2.

Fig. 7 is a front View of the auxiliary device used in trimming worn shuttles,

Fig. 8 is a plan view thereof, v'

Fig. 9 is a sectional view showingy the cutter as operating on a rough block, and

g jaw Fig. is a similar view showing the cutter as trimming a worn shuttle.

In the drawings, I indicates a lathe bed, 2 a slide which is slidable on the bed and rigidly connectable with it, as by a screw 32, 3 an auxiliary slide which is slidable on the slide 2 parallel to the bed by means of crank 2|, threaded spindle 22 and nut 23, which is connected to rib v24 of the auxiliary slide 3. The auxiliary slide 3 serves for the fine adjustment, while slide 2 is utilized for coarse adjustment. The auxiliary slide 3. isf,

"front wall of the shuttle. If desired, the two 'lugs I02 are also adjusted to a position over the axis. of therwork and then the front wall is maprovided with iaterauy protrudingarms (Fig. 2"),

and on its upper part is provided With aslidew'ay upon which the slide 4 slidesftransverselyto the lathe bed. The slide 4 is provided with upright ribs 5, in which is mounted the shaftI, on whichL can be rocked the base plate II, having ribs "I0, of the clamping device hereinafter described.

On the adjusting plate I2 is mounted thebrackety `member I6, which, as shown in Fig. v3, is guided by the nut I4 along bracket I3. Secured to slide Vmember I6 by screws I8 and I9 is a clamping jaw I'|. Since the nut I4 is securely connected to bracket I3, the spindle I5 will move upwards or downwards according to the directionof rotation and, together with it, will move the slide member I6, as well as theclamping jaw I'I. As will be seen in Fig. 5, the clamping jaw AI'I is provided with a curved slot 31 for the screw I9, so that it may be rocked laterally if the wood 3| to be machined is not of uniformfthickness. The base plate II, together with the whole clamping mechanism, may be adjusted at various'angles by means of the screw and the'scalel I`5. The cutting device is shown diagrammatically at in Fig. 1. 7

The upper clamping jaw II carries forwardly displaceable lugs |02, which are used when machining the rst two edges of lrough blocks'and enable the said blocks to be securely held even if the spindle I5 is only lightly tightened.

On the slide 2, Fig. 6, a stop 25 is mounted to limit the feeding movement of the slide 3, which is slidable longitudinally of slide 2. .This stop 25 can be adjusted by means ofy a spindle 26, which carries a collar I20,and only the shaft of the spindle 26. extends through the wall of theslide and there it carries a knob |22, adapted to be turned by hand. The other end of the spindle 26 is secured by a screw I2I and a counter nut I2Ia and, by this clamping of the spindle in the slide 2,.which is easily readjusted when worn, end play is entirely eliminated. The device A.operates as follows: y

When machining rough blocks, the adjusting plate I-2 is iirst of all moved forward to such an extent that the block protrudes slightly over the clamping device. Thereupon the tilting device is rocked about the shaft until the base plate II is` horizontal and stands at right angles vto the vertically operatingrmilling spindle.

The two lugs |02', of which only one is shown in Fig. 1, are pressed tothe surface of the rough block, which is placed between the base plate II and the clamping jaw I'I by tightening the spindle I5; then first the side intended for the bottom of the shuttle is machined by the cutter shown diagrammatically in Fig. 1. In this way, preferably, a number of shuttle blocks are machined while the adjustment of the clamping device remains unaltered. Thereupon the adjusting plate I2 is adjusted according to the width of the shuttle blocksand by means of the micrometer screw 20, the'pointer IIB andthe scale II5, the desired inclination of the whole device is obtained in accordance with the inclination of the chined. Before the back wall is machined, the lugs |02 are removed and, as described above, the

'adjusting'plate I2 is set at the proper angle for the back wall of the shuttle. As soon as the first back wall has been trimmed, the stop 25 is accurately adjusted in accordance with the desired g 'width of the bottom so that the movement of the slide in theldirectioni towards the cutter is limited, while the shuttle block is .somewhat vremoved-from; the milling head by' rotation of the 'Thus 'all the' blocks so'far machined will be of exactly'thesamewidth. The process is repeated kin a suitable manner for the surface of the block.

',.The` auxiliary device, shownin Figs. 7 and 8, makes it possible to clamp in shuttles with nonuniformly worn'. walls and those the points of which do not l'ie in the same axis, in suchv a man- *ne'r that the worny edges may be machined in the proper way'. 'Ihis device comprises a steel rail |03, see Fig.- 10, on which are mounted angle members II2 and II3, having 'adjustable slides |09 and I'I0 provided with centers or holes I 25. The-shuttle |39,v see Fig. '7, is placed between said vangle members, the slides;'if necessary, being suitjrably-'adjusted' in such` a-ma'nner that the shuttle axi's'is parallel to the steel railV |03. The latter is then placed along the adjusting plate I2' upon the base plate I I and then the'shuttle is clamped in` by means 'of the jaw' II, in readiness for the lmachining; The rail I03'is provided on one side "with" a 'guide' I'I4, inwhicli the angle member `vvI'I-2is'slitiable` Said member may be screwed fast in holes |40 in the rail by means of the set screw |04; Member I I3has a guide II5 on the fother side of the rail, whereby it isv possible to obtain a fine adjustment of the angular member I I3 by means of the screw |06 and nut |01, When 'machining wornY shuttles, especially such wherein vthe points are' not in the axis, the auxiliary device will, ofcourse, b'efused for machining the bottom and the front side only, Vfor when the remaining surfaces are machined, regularly formed iiat surfaces will already be available for use.

y.Having thus described my invention, what I claim is: y

' 1. Work' support tobe used on a machine for formingl shuttles and for trimming worn shuttles ffor securing Orclamping together the base'plate,

the elampingbracket and the adjustable plate. 2. In the Imachine of claim 1,4 an auxiliary slide, carrying the clamping device towards the cutter, being limited by means of a stop mounted on the main slide and being adjustable by means adjustable vertically by means of a threaded of a threaded spindle. spindle and is rockable about a horizontal axis 3. A device in accordance with claim 1, and in said slidabie work support, so that the inclinaa micrometer screw for rocking said support and tion of its clamping surface may be adjusted to 5 the clamping device thereon. the inclination of the edge of the Work contacting 5 4. A device in accordance with claim 1, in therewith. which the clamping jaw is mounted on a slide JOSEF RUCKERT. 

